A lot of the amount of powderloads I used depends on the kind of powder. It also depends on the kind of projectile that I will be shooting. Some projectiles can be pushed harder then others. Then you have to take into consideration the kind of rifle that is being used. So I really do not have a set defination.

As for the use of 150 grain loads.. No I do not think there is any advantage to that large of a charge. If I were going to shoot magnum loads I better be hunting large animals at extreme distances where power and penetration is a must.